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10 Year Guarantee

  • Windows and Doors
  • Bi-folding Doors
  • Conservatories
  • Roofline and Cladding

Double Glazed Windows in Northampton & Across Northamptonshire - HiTech uPVC

At HiTech UPVC we’ve been working in Northampton and across Northamptonshire since 1984. Over the past 30 years, we have helped countless homeowners and businesses to save money and improve the security of their property by upgrading their windows to double glazed units. Over this time, we’ve build up an enviable reputation for both quality products and an excellent level of customer service.

All of the glass we use meets British standard requirements and is toughened to provide extra security. We’re so confident in the products we use that they also come with a 10 year guarantee, which is backed by HomePro insurance.

Sash Windows

If you have an victorian or georgian building, it is likely that you may still have older single glazed sash windows. This style of window gives a house massive kerb appeal and helps to maintain the style of the property. One key downside though is that they are less secure than modern windows and often much less energy efficient.

Fortunately, HiTech can help. By upgrading your current sash windows to a double glazed version, you can save money on your energy bills and also improve the security of your property. All of these benefits are achievable without having to compromise on the look of your building.

Double Glazing

Planitherm Windows

All of the windows we fit are from Planitherm. Planitherm have built an excellent reputation for high performing thermally insulated glass. By upgrading your current windows to Planitherm, you can improve the security of your property and reduce the amount of heat you lose from your home. To find out more about Planitherm please see our guide.

If you’re based in Northampton, or in one of the towns and villages in Northamptonshire, then we’ll provide you with a free quotation. Call us on 01604 767 744 to arrange your quote.


If you'd like to contact us or get a quote, use the form below to start you enquiry


We're backed by a 10 year HomePro guarantee.

  • Rooflines & cladding
  • Conservatories
  • Aluminium & hardwood doors & windows
  • Bi-folding doors
  • Planitherm
  • Ultraframe
  • Planitherm
  • BBA
  • Fairtraders
  • The Guild
  • Euro Cell
  • Marshall
  • Homepro